package com.spring.boot.sample.test2.config;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;
@Component
public class SpringUtil implements ApplicationContextAware{
	
	private static ApplicationContext applicationContext=null;

	@Override
	public void setApplicationContext(ApplicationContext applicationContext)
			throws BeansException {
		if(SpringUtil.applicationContext==null){
			SpringUtil.applicationContext=applicationContext;
		}
	}
	//获取applicationContext
	public static ApplicationContext getApplicationContext(){
		return applicationContext;
	}
	//通过name获取 Bean.
	public static Object getBean(String name){
		return getApplicationContext().getBean(name);
	}
	 //通过class获取Bean.
	public static <T> T getBean(Class<T> clazz){
		return getApplicationContext().getBean(clazz);
	}
	 //通过name,以及Clazz返回指定的Bean
	public static <T> T getBean(String name,Class<T> clazz){
		return getApplicationContext().getBean(name,clazz);
	}

}
